Welcome to the event site for URISA’s 2019 Caribbean GIS Conference in Trinidad! 
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Start reviewing the comprehensive workshop and training opportunities, the keynote addresses, professional development and networking events, and the abundance of concurrent breakout sessions in several focused program tracks:
  • Environmental Applications using Geospatial Technologies
  • Managing How Humans Impact the Community
  • Technological Advances in GIS
  • Governance, Education and the Future of GIS
  • Business Intelligence

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Back To Schedule
Monday, November 18 • 8:30am - 5:00pm
Hands-on Processing of LiDAR and Photogrammetry Point Clouds (Full-Day Workshop) - FULL

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Hands-on Processing of LiDAR and Photogrammetry Point Clouds (Full-Day Workshop) - FULL  TO CAPACITY
Monday, November 18, 2019 - 8:30 AM - 5:00 PM

Martin Isenburg, PhD, Chief Scientist, rapidlasso GmbH, Sommerhausen, Bavaria - Germany

Dr. Isenburg will start with an interactive and intuitive introduction on LiDAR processing with examples of different projects such as flood mapping, archaeological discoveries, measuring forest timber volume or biomass, etc .... This is followed by a hands-on workshop during which attendees will perform the typical steps of a LiDAR processing workflow on their own Windows laptops using the software and the data provided. This workshop will touch upon parts of (1) LiDAR quality checking, (2) LiDAR preparation (tiling, cleaning, classifying), and (3) LiDAR derivative creation such as DTMs, DSMs, contour maps. Finally we will repeat similar exercises using photogrammetric point clouds that were derived from image correlation with software such as Pix4D or AgiSoft as those are often more accessible than LiDAR - especially in remote areas.

LEARNING OBJECTIVES: Understand LiDAR and how it is different from photogrammetric point clouds in terms of vegetation penetration and active versus passive sensing. Importance of quality checking. And again the big importance of quality checking. Typical workflow of point cloud processing pipeline. Generating standard derivative products.

Part 1:Overview Lecture about LiDAR and the LAS format. Hands-on Quality Checking:, visual inspection, LAS file validation, flightline overlap and alignment, pulse density and spacing calculations

Part 2: Hands-on LiDAR preparation: compression, spatial indexing, tiling, importance of tile buffering, noise removal, ground classification, building and vegetation classification.

Part 3: LiDAR product generation: DTM / DSM, intensity grids, building outlines, contour line generation, forestry metrics, brief intro to full waveform LiDAR (time permitting)

Part 4: Same workflow as above but now for photogrammetry points with the sole goal of DTM generation. What steps are different and why? What quality can be expected. And (in case the time permits) combining LiDAR and photogrammetry points).

I will bring all software and data sets on USB stick and expect each student has access to a Windows PC with 10 GB of free disk space. I plan to bring my own data sets but if there is local LiDAR and/or photogrammetry data available from Trinidad and Tobago or any of the nearby island areas that would be splendid.

HANDS-ON: Windows PCs or computers with optionally installed QGIS and Google Earth

PREREQUISITES: Fundamentals of GIS

AUDIENCE: students or scientists in remote sensing, professionals in urban planning, forest management, environmental protection, wetland rehabilitation, coastal management, archaeologists, hydrologists, geologists, volcanologists, biologists , ...

Limited to 15 participants. Must have laptop to participate in this hands-on workshop.

avatar for Martin Isenburg, PhD

Martin Isenburg, PhD

Chief Scientist, rapidlasso GmbH
Dr. Isenburg received his MSc in 1999 from the University of British Columbia in Vancouver, Canada and his PhD in 2004 from the University of North Carolina at Chapel Hill, USA – both in Computer Science. Currently, he is an independent scientist, lecturer, and research consultant... Read More →

Monday November 18, 2019 8:30am - 5:00pm AST